What is this? Chilblain? Excema?

[BohemianBluebell]

Anyone know what this might be? It started off smaller and didn't itch but now can be very itchy at times. I get chilblains on my toes sometimes so I'm wondering if this is one too ...

I’ve had it a few weeks

Here's another pic

That first picture looks like it has tiny blisters under the skin, could possibly be pompholyx eczema which lasts a few weeks and is very itchy when the blisters are there, you get it on your hands and feet in patches like that

Though it could be a chilblain if it feels and looks similar to your foot ones

@BobnLen Thanks for replying. Yes , I have googled pompholyx eczema before and wondered if it could be. But the area on my thumb is slightly swollen , and also it stings when in hot water, which chilblains can do!